如何在结果中将两个数组组合成一个数组？

Question

Suppose that I have two arrays:

In [41]: x = np.array([1, 4, 9])
In [42]: y = np.array([3, 5, 7, 11])

And their indices in the result array:

In [43]: ix = [1, 3, 4]
In [44]: iy = [0, 2, 5, 6]

The result array should be r = array([ 3, 1, 5, 4, 9, 7, 11]) which satisfied all(r[ix] == x) and all(r[iy] = y) . I already known the verbose solution, and I want to find a better one (may a one line solution using something like np.where or np.select ).

In [45]: r = np.empty(shape=len(x)+len(y))
In [46]: r[ix] = x; r[iy] = y; r
Out[46]: array([ 3.,  1.,  5.,  4.,  9.,  7., 11.])

Answer 1

np.array([x[1] for x in sorted(zip(ix, x) + zip(iy, y)))]

但是我不知道它是否是最佳选择，或者也许numpy有进一步的优化。